From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
drivers/media/usb/cx231xx/cx231xx-417.c | 33 ++++-------
drivers/media/usb/cx231xx/cx231xx-cards.c | 6 +-
drivers/media/usb/cx231xx/cx231xx-video.c | 94 ++++++++++---------------------
drivers/media/usb/cx231xx/cx231xx.h | 8 +--
4 files changed, 49 insertions(+), 92 deletions(-)
diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
index 3f295b4..983ea83 100644
--- a/drivers/media/usb/cx231xx/cx231xx-417.c
+++ b/drivers/media/usb/cx231xx/cx231xx-417.c
@@ -1868,13 +1868,9 @@ void cx231xx_417_unregister(struct cx231xx *dev)
dprintk(1, "%s()\n", __func__);
dprintk(3, "%s()\n", __func__);
- if (dev->v4l_device) {
- if (-1 != dev->v4l_device->minor)
- video_unregister_device(dev->v4l_device);
- else
- video_device_release(dev->v4l_device);
+ if (video_is_registered(&dev->v4l_device)) {
+ video_unregister_device(&dev->v4l_device);
v4l2_ctrl_handler_free(&dev->mpeg_ctrl_handler.hdl);
- dev->v4l_device = NULL;
}
}
@@ -1911,25 +1907,21 @@ static struct cx2341x_handler_ops cx231xx_ops = {
.s_video_encoding = cx231xx_s_video_encoding,
};
-static struct video_device *cx231xx_video_dev_alloc(
+static void cx231xx_video_dev_init(
struct cx231xx *dev,
struct usb_device *usbdev,
- struct video_device *template,
- char *type)
+ struct video_device *vfd,
+ const struct video_device *template,
+ const char *type)
{
- struct video_device *vfd;
-
dprintk(1, "%s()\n", __func__);
- vfd = video_device_alloc();
- if (NULL == vfd)
- return NULL;
*vfd = *template;
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name,
type, cx231xx_boards[dev->model].name);
vfd->v4l2_dev = &dev->v4l2_dev;
vfd->lock = &dev->lock;
- vfd->release = video_device_release;
+ vfd->release = video_device_release_empty;
vfd->ctrl_handler = &dev->mpeg_ctrl_handler.hdl;
video_set_drvdata(vfd, dev);
if (dev->tuner_type == TUNER_ABSENT) {
@@ -1938,9 +1930,6 @@ static struct video_device *cx231xx_video_dev_alloc(
v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
}
-
- return vfd;
-
}
int cx231xx_417_register(struct cx231xx *dev)
@@ -1983,9 +1972,9 @@ int cx231xx_417_register(struct cx231xx *dev)
cx2341x_handler_set_50hz(&dev->mpeg_ctrl_handler, false);
/* Allocate and initialize V4L video device */
- dev->v4l_device = cx231xx_video_dev_alloc(dev,
- dev->udev, &cx231xx_mpeg_template, "mpeg");
- err = video_register_device(dev->v4l_device,
+ cx231xx_video_dev_init(dev, dev->udev,
+ &dev->v4l_device, &cx231xx_mpeg_template, "mpeg");
+ err = video_register_device(&dev->v4l_device,
VFL_TYPE_GRABBER, -1);
if (err < 0) {
dprintk(3, "%s: can't register mpeg device\n", dev->name);
@@ -1994,7 +1983,7 @@ int cx231xx_417_register(struct cx231xx *dev)
}
dprintk(3, "%s: registered device video%d [mpeg]\n",
- dev->name, dev->v4l_device->num);
+ dev->name, dev->v4l_device.num);
return 0;
}
diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c
index 85220b9..fe00da1 100644
--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -1230,9 +1230,9 @@ static void cx231xx_create_media_graph(struct cx231xx *dev)
if (tuner)
media_entity_create_link(tuner, 0, decoder, 0,
MEDIA_LNK_FL_ENABLED);
- media_entity_create_link(decoder, 1, &dev->vdev->entity, 0,
+ media_entity_create_link(decoder, 1, &dev->vdev.entity, 0,
MEDIA_LNK_FL_ENABLED);
- media_entity_create_link(decoder, 2, &dev->vbi_dev->entity, 0,
+ media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0,
MEDIA_LNK_FL_ENABLED);
#endif
}
@@ -1748,7 +1748,7 @@ static void cx231xx_usb_disconnect(struct usb_interface *interface)
if (dev->users) {
dev_warn(dev->dev,
"device %s is open! Deregistration and memory deallocation are deferred on close.\n",
- video_device_node_name(dev->vdev));
+ video_device_node_name(&dev->vdev));
/* Even having users, it is safe to remove the RC i2c driver */
cx231xx_ir_exit(dev);
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index acc1b68..c261e16 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -1129,7 +1129,7 @@ int cx231xx_enum_input(struct file *file, void *priv,
(CX231XX_VMUX_CABLE == INPUT(n)->type))
i->type = V4L2_INPUT_TYPE_TUNER;
- i->std = dev->vdev->tvnorms;
+ i->std = dev->vdev.tvnorms;
/* If they are asking about the active input, read signal status */
if (n == dev->video_input) {
@@ -1524,7 +1524,7 @@ int cx231xx_querycap(struct file *file, void *priv,
cap->capabilities = cap->device_caps | V4L2_CAP_READWRITE |
V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |
V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
- if (dev->radio_dev)
+ if (video_is_registered(&dev->radio_dev))
cap->capabilities |= V4L2_CAP_RADIO;
return 0;
@@ -1802,34 +1802,21 @@ void cx231xx_release_analog_resources(struct cx231xx *dev)
/*FIXME: I2C IR should be disconnected */
- if (dev->radio_dev) {
- if (video_is_registered(dev->radio_dev))
- video_unregister_device(dev->radio_dev);
- else
- video_device_release(dev->radio_dev);
- dev->radio_dev = NULL;
- }
- if (dev->vbi_dev) {
+ if (video_is_registered(&dev->radio_dev))
+ video_unregister_device(&dev->radio_dev);
+ if (video_is_registered(&dev->vbi_dev)) {
dev_info(dev->dev, "V4L2 device %s deregistered\n",
- video_device_node_name(dev->vbi_dev));
- if (video_is_registered(dev->vbi_dev))
- video_unregister_device(dev->vbi_dev);
- else
- video_device_release(dev->vbi_dev);
- dev->vbi_dev = NULL;
+ video_device_node_name(&dev->vbi_dev));
+ video_unregister_device(&dev->vbi_dev);
}
- if (dev->vdev) {
+ if (video_is_registered(&dev->vdev)) {
dev_info(dev->dev, "V4L2 device %s deregistered\n",
- video_device_node_name(dev->vdev));
+ video_device_node_name(&dev->vdev));
if (dev->board.has_417)
cx231xx_417_unregister(dev);
- if (video_is_registered(dev->vdev))
- video_unregister_device(dev->vdev);
- else
- video_device_release(dev->vdev);
- dev->vdev = NULL;
+ video_unregister_device(&dev->vdev);
}
v4l2_ctrl_handler_free(&dev->ctrl_handler);
v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);
@@ -2086,7 +2073,7 @@ static struct video_device cx231xx_vbi_template;
static const struct video_device cx231xx_video_template = {
.fops = &cx231xx_v4l_fops,
- .release = video_device_release,
+ .release = video_device_release_empty,
.ioctl_ops = &video_ioctl_ops,
.tvnorms = V4L2_STD_ALL,
};
@@ -2122,19 +2109,14 @@ static struct video_device cx231xx_radio_template = {
/******************************** usb interface ******************************/
-static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
- const struct video_device
- *template, const char *type_name)
+static void cx231xx_vdev_init(struct cx231xx *dev,
+ struct video_device *vfd,
+ const struct video_device *template,
+ const char *type_name)
{
- struct video_device *vfd;
-
- vfd = video_device_alloc();
- if (NULL == vfd)
- return NULL;
-
*vfd = *template;
vfd->v4l2_dev = &dev->v4l2_dev;
- vfd->release = video_device_release;
+ vfd->release = video_device_release_empty;
vfd->lock = &dev->lock;
snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);
@@ -2146,7 +2128,6 @@ static struct video_device *cx231xx_vdev_init(struct cx231xx *dev,
v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);
v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);
}
- return vfd;
}
int cx231xx_register_analog_devices(struct cx231xx *dev)
@@ -2189,20 +2170,16 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
/* write code here... */
/* allocate and fill video video_device struct */
- dev->vdev = cx231xx_vdev_init(dev, &cx231xx_video_template, "video");
- if (!dev->vdev) {
- dev_err(dev->dev, "cannot allocate video_device.\n");
- return -ENODEV;
- }
+ cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->video_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&dev->vdev->entity, 1, &dev->video_pad, 0);
+ ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0);
if (ret < 0)
dev_err(dev->dev, "failed to initialize video media entity!\n");
#endif
- dev->vdev->ctrl_handler = &dev->ctrl_handler;
+ dev->vdev.ctrl_handler = &dev->ctrl_handler;
/* register v4l2 video video_device */
- ret = video_register_device(dev->vdev, VFL_TYPE_GRABBER,
+ ret = video_register_device(&dev->vdev, VFL_TYPE_GRABBER,
video_nr[dev->devno]);
if (ret) {
dev_err(dev->dev,
@@ -2212,28 +2189,24 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
}
dev_info(dev->dev, "Registered video device %s [v4l2]\n",
- video_device_node_name(dev->vdev));
+ video_device_node_name(&dev->vdev));
/* Initialize VBI template */
cx231xx_vbi_template = cx231xx_video_template;
strcpy(cx231xx_vbi_template.name, "cx231xx-vbi");
/* Allocate and fill vbi video_device struct */
- dev->vbi_dev = cx231xx_vdev_init(dev, &cx231xx_vbi_template, "vbi");
+ cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");
- if (!dev->vbi_dev) {
- dev_err(dev->dev, "cannot allocate video_device.\n");
- return -ENODEV;
- }
#if defined(CONFIG_MEDIA_CONTROLLER)
dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&dev->vbi_dev->entity, 1, &dev->vbi_pad, 0);
+ ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0);
if (ret < 0)
dev_err(dev->dev, "failed to initialize vbi media entity!\n");
#endif
- dev->vbi_dev->ctrl_handler = &dev->ctrl_handler;
+ dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;
/* register v4l2 vbi video_device */
- ret = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
+ ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,
vbi_nr[dev->devno]);
if (ret < 0) {
dev_err(dev->dev, "unable to register vbi device\n");
@@ -2241,18 +2214,13 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
}
dev_info(dev->dev, "Registered VBI device %s\n",
- video_device_node_name(dev->vbi_dev));
+ video_device_node_name(&dev->vbi_dev));
if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {
- dev->radio_dev = cx231xx_vdev_init(dev, &cx231xx_radio_template,
- "radio");
- if (!dev->radio_dev) {
- dev_err(dev->dev,
- "cannot allocate video_device.\n");
- return -ENODEV;
- }
- dev->radio_dev->ctrl_handler = &dev->radio_ctrl_handler;
- ret = video_register_device(dev->radio_dev, VFL_TYPE_RADIO,
+ cx231xx_vdev_init(dev, &dev->radio_dev,
+ &cx231xx_radio_template, "radio");
+ dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;
+ ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,
radio_nr[dev->devno]);
if (ret < 0) {
dev_err(dev->dev,
@@ -2260,7 +2228,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev)
return ret;
}
dev_info(dev->dev, "Registered radio device as %s\n",
- video_device_node_name(dev->radio_dev));
+ video_device_node_name(&dev->radio_dev));
}
return 0;
diff --git a/drivers/media/usb/cx231xx/cx231xx.h b/drivers/media/usb/cx231xx/cx231xx.h
index 573b3c0..9251111 100644
--- a/drivers/media/usb/cx231xx/cx231xx.h
+++ b/drivers/media/usb/cx231xx/cx231xx.h
@@ -634,7 +634,7 @@ struct cx231xx {
/* video for linux */
int users; /* user count for exclusive use */
- struct video_device *vdev; /* video for linux device struct */
+ struct video_device vdev; /* video for linux device struct */
v4l2_std_id norm; /* selected tv norm */
int ctl_freq; /* selected frequency */
unsigned int ctl_ainput; /* selected audio input */
@@ -656,8 +656,8 @@ struct cx231xx {
struct mutex ctrl_urb_lock; /* protects urb_buf */
struct list_head inqueue, outqueue;
wait_queue_head_t open, wait_frame, wait_stream;
- struct video_device *vbi_dev;
- struct video_device *radio_dev;
+ struct video_device vbi_dev;
+ struct video_device radio_dev;
#if defined(CONFIG_MEDIA_CONTROLLER)
struct media_device *media_dev;
@@ -724,7 +724,7 @@ struct cx231xx {
u8 USE_ISO;
struct cx231xx_tvnorm encodernorm;
struct cx231xx_tsport ts1, ts2;
- struct video_device *v4l_device;
+ struct video_device v4l_device;
atomic_t v4l_reader_count;
u32 freq;
unsigned int input;
--
2.1.4
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